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<div class="header">
  <div class="headertitle"><div class="title">soundgen.cpp</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">  Copyright (c) 2019-2022 Fabrizio Di Vittorio.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">  All rights reserved.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">* Please contact fdivitto2013@gmail.com if you need a commercial license.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"></span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">* This library and related software is available under GPL v3.</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"></span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">  it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">  (at your option) any later version.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"></span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">  GNU General Public License for more details.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"></span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">  You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> */</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &quot;freertos/FreeRTOS.h&quot;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &quot;freertos/timers.h&quot;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &lt;ctype.h&gt;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#include &quot;driver/dac.h&quot;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#include &quot;soc/i2s_reg.h&quot;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &quot;driver/periph_ctrl.h&quot;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#include &quot;soc/rtc.h&quot;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#include &lt;soc/sens_reg.h&gt;</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#include &quot;esp_log.h&quot;</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="preprocessor">#include &quot;driver/sigmadelta.h&quot;</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="preprocessor">#include &quot;<a class="code" href="soundgen_8h.html">soundgen.h</a>&quot;</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="preprocessor">#pragma GCC optimize (&quot;O2&quot;</span>)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="keyword">namespace </span>fabgl {</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment">// SineWaveformGenerator</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="keyword">static</span> <span class="keyword">const</span> int8_t sinTable[257] = {</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>   0,    3,    6,    9,   12,   16,   19,   22,   25,   28,   31,   34,   37,   40,   43,   46,</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>  49,   51,   54,   57,   60,   63,   65,   68,   71,   73,   76,   78,   81,   83,   85,   88,</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>  90,   92,   94,   96,   98,  100,  102,  104,  106,  107,  109,  111,  112,  113,  115,  116,</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span> 117,  118,  120,  121,  122,  122,  123,  124,  125,  125,  126,  126,  126,  127,  127,  127,</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span> 127,  127,  127,  127,  126,  126,  126,  125,  125,  124,  123,  122,  122,  121,  120,  118,</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span> 117,  116,  115,  113,  112,  111,  109,  107,  106,  104,  102,  100,   98,   96,   94,   92,</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>  90,   88,   85,   83,   81,   78,   76,   73,   71,   68,   65,   63,   60,   57,   54,   51,</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>  49,   46,   43,   40,   37,   34,   31,   28,   25,   22,   19,   16,   12,    9,    6,    3,</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>   0,   -3,   -6,   -9,  -12,  -16,  -19,  -22,  -25,  -28,  -31,  -34,  -37,  -40,  -43,  -46,</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span> -49,  -51,  -54,  -57,  -60,  -63,  -65,  -68,  -71,  -73,  -76,  -78,  -81,  -83,  -85,  -88,</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span> -90,  -92,  -94,  -96,  -98, -100, -102, -104, -106, -107, -109, -111, -112, -113, -115, -116,</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>-117, -118, -120, -121, -122, -122, -123, -124, -125, -125, -126, -126, -126, -127, -127, -127,</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>-127, -127, -127, -127, -126, -126, -126, -125, -125, -124, -123, -122, -122, -121, -120, -118,</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>-117, -116, -115, -113, -112, -111, -109, -107, -106, -104, -102, -100,  -98,  -96,  -94,  -92,</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span> -90,  -88,  -85,  -83,  -81,  -78,  -76,  -73,  -71,  -68,  -65,  -63,  -60,  -57,  -54,  -51,</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span> -49,  -46,  -43,  -40,  -37,  -34,  -31,  -28,  -25,  -22,  -19,  -16,  -12,   -9,   -6,   -3,</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>   0,</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>};</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>SineWaveformGenerator::SineWaveformGenerator()</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> : m_phaseInc(0),</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>   m_phaseAcc(0),</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>   m_frequency(0),</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>   m_lastSample(0)</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>{</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>}</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sine_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">   89</a></span><span class="keywordtype">void</span> SineWaveformGenerator::setFrequency(<span class="keywordtype">int</span> value) {</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>  <span class="keywordflow">if</span> (m_frequency != value) {</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>    m_frequency = value;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>    m_phaseInc = (((uint32_t)m_frequency * 256) &lt;&lt; 11) / sampleRate();</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>  }</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>}</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sine_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">   97</a></span><span class="keywordtype">int</span> SineWaveformGenerator::getSample() {</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <span class="keywordflow">if</span> (m_frequency == 0 || duration() == 0) {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>    <span class="keywordflow">if</span> (m_lastSample &gt; 0)</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>      --m_lastSample;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_lastSample &lt; 0)</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>      ++m_lastSample;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>      m_phaseAcc = 0;</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>    <span class="keywordflow">return</span> m_lastSample;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>  }</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span> </div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>  <span class="comment">// get sample  (-128...+127)</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>  uint32_t index = m_phaseAcc &gt;&gt; 11;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>  <span class="keywordtype">int</span> sample = sinTable[index];</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span>  sample = sample * volume() / 127;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>  m_lastSample = sample;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span> </div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>  m_phaseAcc = (m_phaseAcc + m_phaseInc) &amp; 0x7ffff;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span> </div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>  decDuration();</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span> </div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>}</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">// SineWaveformGenerator</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment"></span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span> </div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span><span class="comment">// SquareWaveformGenerator</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>SquareWaveformGenerator::SquareWaveformGenerator()</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>  : m_phaseInc(0),</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span>    m_phaseAcc(0),</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>    m_frequency(0),</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>    m_lastSample(0),</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>    m_dutyCycle(127)</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span>{</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>}</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span> </div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"><a class="line" href="classfabgl_1_1_square_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  144</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_square_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">SquareWaveformGenerator::setFrequency</a>(<span class="keywordtype">int</span> value) {</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span>  <span class="keywordflow">if</span> (m_frequency != value) {</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>    m_frequency = value;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>    m_phaseInc = (((uint32_t)m_frequency * 256) &lt;&lt; 11) / <a class="code hl_function" href="classfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63.html#abc395029362d9990b5dad44dfafe9d63">sampleRate</a>();</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>  }</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>}</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span> </div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="comment">// dutyCycle: 0..255 (255=100%)</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"><a class="line" href="classfabgl_1_1_square_waveform_generator_a5719e6bf55f3f485e6b82e7800acf004.html#a5719e6bf55f3f485e6b82e7800acf004">  153</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_square_waveform_generator_a5719e6bf55f3f485e6b82e7800acf004.html#a5719e6bf55f3f485e6b82e7800acf004">SquareWaveformGenerator::setDutyCycle</a>(<span class="keywordtype">int</span> dutyCycle)</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>{</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>  m_dutyCycle = dutyCycle;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>}</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"><a class="line" href="classfabgl_1_1_square_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  159</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_square_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">SquareWaveformGenerator::getSample</a>() {</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>  <span class="keywordflow">if</span> (m_frequency == 0 || <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>    <span class="keywordflow">if</span> (m_lastSample &gt; 0)</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>      --m_lastSample;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_lastSample &lt; 0)</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>      ++m_lastSample;</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>      m_phaseAcc = 0;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>    <span class="keywordflow">return</span> m_lastSample;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>  }</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>  uint32_t index = m_phaseAcc &gt;&gt; 11;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>  <span class="keywordtype">int</span> sample = (index &lt;= m_dutyCycle ? 127 : -127);</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span> </div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span> </div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>  m_lastSample = sample;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span> </div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>  m_phaseAcc = (m_phaseAcc + m_phaseInc) &amp; 0x7ffff;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span> </div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>  decDuration();</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>}</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span> </div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span><span class="comment">// SquareWaveformGenerator</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment"></span> </div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">// TriangleWaveformGenerator</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span> </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span> </div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>TriangleWaveformGenerator::TriangleWaveformGenerator()</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  : m_phaseInc(0),</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>    m_phaseAcc(0),</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>    m_frequency(0),</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>    m_lastSample(0)</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>{</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>}</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span> </div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"><a class="line" href="classfabgl_1_1_triangle_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  202</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_triangle_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">TriangleWaveformGenerator::setFrequency</a>(<span class="keywordtype">int</span> value) {</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>  <span class="keywordflow">if</span> (m_frequency != value) {</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>    m_frequency = value;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>    m_phaseInc = (((uint32_t)m_frequency * 256) &lt;&lt; 11) / <a class="code hl_function" href="classfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63.html#abc395029362d9990b5dad44dfafe9d63">sampleRate</a>();</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>  }</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span>}</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span> </div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span> </div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"><a class="line" href="classfabgl_1_1_triangle_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  210</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_triangle_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">TriangleWaveformGenerator::getSample</a>() {</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>  <span class="keywordflow">if</span> (m_frequency == 0 || <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>    <span class="keywordflow">if</span> (m_lastSample &gt; 0)</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>      --m_lastSample;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_lastSample &lt; 0)</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>      ++m_lastSample;</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>      m_phaseAcc = 0;</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>    <span class="keywordflow">return</span> m_lastSample;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>  }</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span> </div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>  uint32_t index = m_phaseAcc &gt;&gt; 11;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>  <span class="keywordtype">int</span> sample = (index &amp; 0x80 ? -1 : 1) * ((index &amp; 0x3F) * 2 - (index &amp; 0x40 ? 0 : 127));</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span> </div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span>  m_lastSample = sample;</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span> </div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>  m_phaseAcc = (m_phaseAcc + m_phaseInc) &amp; 0x7ffff;</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span> </div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>  decDuration();</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>}</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">// TriangleWaveformGenerator</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment"></span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span> </div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span> </div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment">// SawtoothWaveformGenerator</span></div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span> </div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span> </div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>SawtoothWaveformGenerator::SawtoothWaveformGenerator()</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>  : m_phaseInc(0),</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>    m_phaseAcc(0),</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>    m_frequency(0),</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>    m_lastSample(0)</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>{</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>}</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span> </div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sawtooth_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  254</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_sawtooth_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">SawtoothWaveformGenerator::setFrequency</a>(<span class="keywordtype">int</span> value) {</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>  <span class="keywordflow">if</span> (m_frequency != value) {</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>    m_frequency = value;</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>    m_phaseInc = (((uint32_t)m_frequency * 256) &lt;&lt; 11) / <a class="code hl_function" href="classfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63.html#abc395029362d9990b5dad44dfafe9d63">sampleRate</a>();</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>  }</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>}</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span> </div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span> </div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sawtooth_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  262</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_sawtooth_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">SawtoothWaveformGenerator::getSample</a>() {</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>  <span class="keywordflow">if</span> (m_frequency == 0 || <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>    <span class="keywordflow">if</span> (m_lastSample &gt; 0)</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>      --m_lastSample;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_lastSample &lt; 0)</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>      ++m_lastSample;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>      m_phaseAcc = 0;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>    <span class="keywordflow">return</span> m_lastSample;</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  }</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span> </div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>  uint32_t index = m_phaseAcc &gt;&gt; 11;</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>  <span class="keywordtype">int</span> sample = index - 128;</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span> </div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>  m_lastSample = sample;</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>  m_phaseAcc = (m_phaseAcc + m_phaseInc) &amp; 0x7ffff;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span> </div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>  decDuration();</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>}</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span> </div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span><span class="comment">// TriangleWaveformGenerator</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="comment"></span> </div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span> </div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span> </div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span><span class="comment">// NoiseWaveformGenerator</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span> </div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span> </div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>NoiseWaveformGenerator::NoiseWaveformGenerator()</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>  : m_noise(0xFAB7)</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>{</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>}</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span> </div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span> </div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"><a class="line" href="classfabgl_1_1_noise_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  303</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_noise_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">NoiseWaveformGenerator::setFrequency</a>(<span class="keywordtype">int</span> value)</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span>{</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>}</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span> </div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span> </div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"><a class="line" href="classfabgl_1_1_noise_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  308</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_noise_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">NoiseWaveformGenerator::getSample</a>()</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>{</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>  <span class="keywordflow">if</span> (<a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>  }</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span> </div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>  <span class="comment">// noise generator based on Galois LFSR</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>  m_noise = (m_noise &gt;&gt; 1) ^ (-(m_noise &amp; 1) &amp; 0xB400u);</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>  <span class="keywordtype">int</span> sample = 127 - (m_noise &gt;&gt; 8);</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span> </div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span> </div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>  decDuration();</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span> </div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>}</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span> </div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span> </div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span><span class="comment">// NoiseWaveformGenerator</span></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span><span class="comment"></span> </div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span> </div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span> </div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span><span class="comment">// VICNoiseGenerator</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span><span class="comment">// &quot;tries&quot; to emulate VIC6561 noise generator</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span><span class="comment">// derived from a reverse engineering VHDL code: http://sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?f=11&amp;t=8733&amp;fbclid=IwAR16x6OMMb670bA2ZtYcbB0Zat_X-oHNB0NxxYigPffXa8G_InSIoNAEiPU</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span> </div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span> </div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>VICNoiseGenerator::VICNoiseGenerator()</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>  : m_frequency(0),</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>    m_counter(0),</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>    m_LFSR(LFSRINIT),</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>    m_outSR(0)</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>{</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>}</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span> </div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"><a class="line" href="classfabgl_1_1_v_i_c_noise_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  347</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_v_i_c_noise_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">VICNoiseGenerator::setFrequency</a>(<span class="keywordtype">int</span> value)</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span>{</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>  <span class="keywordflow">if</span> (m_frequency != value) {</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>    m_frequency = value &gt;= 127 ? 0 : value;</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>    m_LFSR      = LFSRINIT;</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>    m_counter   = 0;</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>    m_outSR     = 0;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>  }</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>}</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span> </div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span> </div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"><a class="line" href="classfabgl_1_1_v_i_c_noise_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  358</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_v_i_c_noise_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">VICNoiseGenerator::getSample</a>()</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>{</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>  <span class="keywordflow">if</span> (<a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span>  }</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span> </div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> reduc = CLK / 8 / <a class="code hl_function" href="classfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63.html#abc395029362d9990b5dad44dfafe9d63">sampleRate</a>(); <span class="comment">// resample to sampleRate() (ie 16000Hz)</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span> </div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>  <span class="keywordtype">int</span> sample = 0;</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span> </div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; reduc; ++i) {</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span> </div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>    <span class="keywordflow">if</span> (m_counter &gt;= 127) {</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span> </div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>      <span class="comment">// reset counter</span></div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>      m_counter = m_frequency;</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span> </div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>      <span class="keywordflow">if</span> (m_LFSR &amp; 1)</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>        m_outSR = ((m_outSR &lt;&lt; 1) | ~(m_outSR &gt;&gt; 7));</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span> </div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>      m_LFSR &lt;&lt;= 1;</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>      <span class="keywordtype">int</span> bit3  = (m_LFSR &gt;&gt; 3) &amp; 1;</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>      <span class="keywordtype">int</span> bit12 = (m_LFSR &gt;&gt; 12) &amp; 1;</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>      <span class="keywordtype">int</span> bit14 = (m_LFSR &gt;&gt; 14) &amp; 1;</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>      <span class="keywordtype">int</span> bit15 = (m_LFSR &gt;&gt; 15) &amp; 1;</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>      m_LFSR |= (bit3 ^ bit12) ^ (bit14 ^ bit15);</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>    } <span class="keywordflow">else</span></div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>      ++m_counter;</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span> </div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>    sample += m_outSR &amp; 1 ? 127 : -128;</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>  }</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span> </div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>  <span class="comment">// simple mean of all samples</span></div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span> </div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>  sample = sample / reduc;</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span> </div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span> </div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>  decDuration();</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span> </div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>}</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span> </div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span> </div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span><span class="comment">// VICNoiseGenerator</span></div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span><span class="comment"></span> </div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span> </div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span> </div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span><span class="comment">// SamplesGenerator</span></div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span> </div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span> </div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>SamplesGenerator::SamplesGenerator(int8_t <span class="keyword">const</span> * <a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>, <span class="keywordtype">int</span> length)</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>  : m_data(<a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>),</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span>    m_length(length),</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span>    m_index(0)</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>{</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span>}</div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span> </div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span> </div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"><a class="line" href="classfabgl_1_1_samples_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">  420</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_samples_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">SamplesGenerator::setFrequency</a>(<span class="keywordtype">int</span> value)</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span>{</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>}</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span> </div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span> </div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"><a class="line" href="classfabgl_1_1_samples_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">  425</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="classfabgl_1_1_samples_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">SamplesGenerator::getSample</a>() {</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span> </div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>  <span class="keywordflow">if</span> (<a class="code hl_function" href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">duration</a>() == 0) {</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>  }</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span> </div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>  <span class="keywordtype">int</span> sample = m_data[m_index++];</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span> </div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>  <span class="keywordflow">if</span> (m_index == m_length)</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>    m_index = 0;</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span> </div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>  <span class="comment">// process volume</span></div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span> </div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span>  decDuration();</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span> </div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span>}</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span> </div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span> </div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span><span class="comment">// SamplesGenerator</span></div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span><span class="comment"></span> </div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span> </div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span> </div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span><span class="comment">// SoundGenerator</span></div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span> </div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span> </div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">  454</a></span><a class="code hl_function" href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">SoundGenerator::SoundGenerator</a>(<span class="keywordtype">int</span> sampleRate, gpio_num_t gpio, <a class="code hl_enumeration" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#ga0c57da098cf653e49e8c46e3a86eee31">SoundGenMethod</a> genMethod)</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>  : m_channels(nullptr),</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span>    m_sampleBuffer{0},</div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span>    m_volume(100),</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>    m_sampleRate(sampleRate),</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>    m_play(false),</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>    m_gpio(gpio),</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span>    m_isr_handle(nullptr),</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>    m_DMAChain(nullptr),</div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>    m_genMethod(genMethod),</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>    m_initDone(false),</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span>    m_timerHandle(nullptr)</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>{</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>}</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span> </div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span> </div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>SoundGenerator::~SoundGenerator()</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>{</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_ac8bb3912a3ce86b15842e79d0b421204.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span>    </div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span>  <span class="keywordflow">if</span> (m_isr_handle) {</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span>    <span class="comment">// cleanup DAC mode</span></div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>    periph_module_disable(PERIPH_I2S0_MODULE);</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>    esp_intr_free(m_isr_handle);</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 2; ++i)</div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span>      heap_caps_free(m_sampleBuffer[i]);</div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span>    heap_caps_free((<span class="keywordtype">void</span>*)m_DMAChain);</div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>  }</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>  </div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>  <span class="keywordflow">if</span> (m_timerHandle) {</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>    <span class="comment">// cleanup sigmadelta mode</span></div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>    esp_timer_stop(m_timerHandle);</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>    esp_timer_delete(m_timerHandle);</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>    m_timerHandle = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>  }</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>  </div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span><span class="preprocessor">  #ifdef FABGL_EMULATED</span></div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span>  SDL_CloseAudioDevice(m_device);</div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span><span class="preprocessor">  #endif</span></div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>    </div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>}</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span> </div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span> </div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_ac8bb3912a3ce86b15842e79d0b421204.html#ac8bb3912a3ce86b15842e79d0b421204">  497</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_sound_generator_ac8bb3912a3ce86b15842e79d0b421204.html#ac8bb3912a3ce86b15842e79d0b421204">SoundGenerator::clear</a>()</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span>{</div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(<span class="keyword">false</span>);</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>  m_channels = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>}</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span> </div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span> </div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span><span class="keywordtype">void</span> SoundGenerator::setDMANode(<span class="keywordtype">int</span> index, <span class="keyword">volatile</span> uint16_t * buf, <span class="keywordtype">int</span> len)</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>{</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span>  m_DMAChain[index].eof          = 1; <span class="comment">// always generate interrupt</span></div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>  m_DMAChain[index].sosf         = 0;</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>  m_DMAChain[index].owner        = 1;</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>  m_DMAChain[index].qe.stqe_next = (lldesc_t *) (m_DMAChain + index + 1);</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>  m_DMAChain[index].offset       = 0;</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>  m_DMAChain[index].size         = len * <span class="keyword">sizeof</span>(uint16_t);</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>  m_DMAChain[index].length       = len * <span class="keyword">sizeof</span>(uint16_t);</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>  m_DMAChain[index].buf          = (uint8_t*) buf;</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>}</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span> </div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span> </div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span><span class="keywordtype">void</span> SoundGenerator::dac_init()</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>{</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span><span class="preprocessor">  #ifndef FABGL_EMULATED</span></div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span>  m_DMAChain = (<span class="keyword">volatile</span> lldesc_t *) heap_caps_malloc(2 * <span class="keyword">sizeof</span>(lldesc_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>  </div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 2; ++i) {</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span>    m_sampleBuffer[i] = (uint16_t *) heap_caps_malloc(FABGL_SOUNDGEN_SAMPLE_BUFFER_SIZE * <span class="keyword">sizeof</span>(uint16_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; FABGL_SOUNDGEN_SAMPLE_BUFFER_SIZE; ++j)</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>      m_sampleBuffer[i][j] = 0x7f00;</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>    setDMANode(i, m_sampleBuffer[i], FABGL_SOUNDGEN_SAMPLE_BUFFER_SIZE);</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span>  }</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span>  m_DMAChain[1].sosf = 1;</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>  m_DMAChain[1].qe.stqe_next = (lldesc_t *) m_DMAChain; <span class="comment">// closes DMA chain</span></div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span>    </div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span>  periph_module_enable(PERIPH_I2S0_MODULE);</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span> </div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>  <span class="comment">// Initialize I2S device</span></div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span>  I2S0.conf.tx_reset                     = 1;</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>  I2S0.conf.tx_reset                     = 0;</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span> </div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span>  <span class="comment">// Reset DMA</span></div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>  I2S0.lc_conf.in_rst                    = 1;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span>  I2S0.lc_conf.in_rst                    = 0;</div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span> </div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>  <span class="comment">// Reset FIFO</span></div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>  I2S0.conf.rx_fifo_reset                = 1;</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>  I2S0.conf.rx_fifo_reset                = 0;</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span>  </div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span>  I2S0.conf_chan.tx_chan_mod = (m_gpio == GPIO_NUM_25 ? 3 : 4);</div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span> </div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>  I2S0.fifo_conf.tx_fifo_mod_force_en    = 1;</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>  I2S0.fifo_conf.tx_fifo_mod             = 1;</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>  I2S0.fifo_conf.dscr_en                 = 1;</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span> </div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span>  I2S0.conf.tx_mono                      = 1;</div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span>  I2S0.conf.tx_start                     = 0;</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>  I2S0.conf.tx_msb_right                 = 1;</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span>  I2S0.conf.tx_right_first               = 1;</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span>  I2S0.conf.tx_slave_mod                 = 0;</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span>  I2S0.conf.tx_short_sync                = 0;</div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span>  I2S0.conf.tx_msb_shift                 = 0;</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span>  </div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span>  I2S0.conf2.lcd_en                      = 1;</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span>  I2S0.conf2.camera_en                   = 0;</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span> </div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>  <span class="keywordtype">int</span> a, b, num, m;</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span>  m_sampleRate = calcI2STimingParams(m_sampleRate, &amp;a, &amp;b, &amp;num, &amp;m);</div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span>  I2S0.clkm_conf.clka_en                 = 0;</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span>  I2S0.clkm_conf.clkm_div_a              = a;</div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span>  I2S0.clkm_conf.clkm_div_b              = b;</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  I2S0.clkm_conf.clkm_div_num            = num;</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>  I2S0.sample_rate_conf.tx_bck_div_num   = m;</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span>  I2S0.sample_rate_conf.tx_bits_mod      = 16;</div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span> </div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span>  <span class="keywordflow">if</span> (m_isr_handle == <span class="keyword">nullptr</span>) {</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span>    esp_intr_alloc_pinnedToCore(ETS_I2S0_INTR_SOURCE, ESP_INTR_FLAG_LEVEL1, ISRHandler, <span class="keyword">this</span>, &amp;m_isr_handle, CoreUsage::quietCore());</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span>    I2S0.int_clr.val     = 0xFFFFFFFF;</div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span>    I2S0.int_ena.out_eof = 1;</div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span>  }</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span>  </div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>  I2S0.out_link.addr  = (uintptr_t) m_DMAChain;</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span>  I2S0.out_link.start = 1;</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span>  I2S0.conf.tx_start  = 1;</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span> </div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span>  dac_i2s_enable();</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>  dac_output_enable(m_gpio == GPIO_NUM_25 ? DAC_CHANNEL_1 : DAC_CHANNEL_2);</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span><span class="preprocessor">  #endif</span></div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span>}</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span> </div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span> </div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span><span class="keywordtype">void</span> SoundGenerator::sigmadelta_init()</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>{</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span>  sigmadelta_config_t sigmadelta_cfg;</div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span>  sigmadelta_cfg.channel             = SIGMADELTA_CHANNEL_0;</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span>  sigmadelta_cfg.sigmadelta_prescale = 10;</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>  sigmadelta_cfg.sigmadelta_duty     = 0;</div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>  sigmadelta_cfg.sigmadelta_gpio     = m_gpio;</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span>  sigmadelta_config(&amp;sigmadelta_cfg);</div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span> </div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span>  esp_timer_create_args_t args = { };</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>  args.callback        = timerHandler;</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span>  args.arg             = <span class="keyword">this</span>;</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span>  args.dispatch_method = ESP_TIMER_TASK;</div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span>  esp_timer_create(&amp;args, &amp;m_timerHandle);</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span>}</div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span> </div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span> </div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span><span class="preprocessor">#ifdef FABGL_EMULATED</span></div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span><span class="keywordtype">void</span> SoundGenerator::sdl_init()</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>{</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>  SDL_AudioSpec wantSpec, haveSpec;</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>  SDL_zero(wantSpec);</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span>  wantSpec.freq     = m_sampleRate;</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span>  wantSpec.format   = AUDIO_U8;</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span>  wantSpec.channels = 1;</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span>  wantSpec.samples  = 2048;</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>  wantSpec.callback = SDLAudioCallback;</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span>  wantSpec.userdata = <span class="keyword">this</span>;</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>  m_device = SDL_OpenAudioDevice(NULL, 0, &amp;wantSpec, &amp;haveSpec, SDL_AUDIO_ALLOW_FORMAT_CHANGE);</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>  m_sampleRate = haveSpec.freq;</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span>}</div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span> </div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span> </div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span><span class="keywordtype">void</span> SoundGenerator::init()</div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span>{</div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span>  <span class="keywordflow">if</span> (!m_initDone) {</div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span>    <span class="comment">// handle automatic paramters</span></div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span>    <span class="keywordflow">if</span> (m_genMethod == <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a06b9281e396db002010bde1de57262eb">SoundGenMethod::Auto</a>)</div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span>      m_genMethod = CurrentVideoMode::get() == <a class="code hl_enumvalue" href="group___enumerations_ga1e46218ee302fcc8c77e4ea0968ea149.html#gga1e46218ee302fcc8c77e4ea0968ea149a9de917eb8d6dcec8b9e987a7dfc09379">VideoMode::CVBS</a> ? <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a582cc73bac6fd333fd602b6a3db1dfd4">SoundGenMethod::SigmaDelta</a> : <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6">SoundGenMethod::DAC</a>;</div>
<div class="line"><a id="l00628" name="l00628"></a><span class="lineno">  628</span>    <span class="keywordflow">if</span> (m_gpio == GPIO_AUTO)</div>
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno">  629</span>      m_gpio = m_genMethod == <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6">SoundGenMethod::DAC</a> ? GPIO_NUM_25 : GPIO_NUM_23;</div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno">  630</span>    </div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno">  631</span>    <span class="comment">// actual init</span></div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno">  632</span>    <span class="keywordflow">if</span> (m_genMethod == <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6">SoundGenMethod::DAC</a>)</div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno">  633</span>      dac_init();</div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno">  634</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno">  635</span>      sigmadelta_init();</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno">  636</span>      </div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno">  637</span><span class="preprocessor">    #ifdef FABGL_EMULATED</span></div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno">  638</span>    sdl_init();</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno">  639</span><span class="preprocessor">    #endif</span></div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno">  640</span>      </div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno">  641</span>    m_initDone = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno">  642</span>  }</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno">  643</span>}</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno">  644</span> </div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno">  645</span> </div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">  646</a></span><span class="keywordtype">bool</span> <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">SoundGenerator::play</a>(<span class="keywordtype">bool</span> value)</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno">  647</span>{</div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno">  648</span>  <span class="keywordflow">if</span> (value != m_play) {</div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno">  649</span>    init();</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno">  650</span>    </div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno">  651</span>    <span class="keywordflow">if</span> (m_genMethod == <a class="code hl_enumvalue" href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6">SoundGenMethod::DAC</a>) {</div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno">  652</span>      I2S0.conf.tx_start = value;</div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno">  653</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno">  654</span>      <span class="keywordflow">if</span> (value)</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno">  655</span>        esp_timer_start_periodic(m_timerHandle, 1000000 / m_sampleRate);</div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno">  656</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno">  657</span>        esp_timer_stop(m_timerHandle);</div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno">  658</span>    }</div>
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno">  659</span>    </div>
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno">  660</span><span class="preprocessor">    #ifdef FABGL_EMULATED</span></div>
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno">  661</span>    SDL_PauseAudioDevice(m_device, !value);</div>
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno">  662</span><span class="preprocessor">    #endif</span></div>
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno">  663</span>    </div>
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno">  664</span>    m_play = value;</div>
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno">  665</span>    <span class="keywordflow">return</span> !value;</div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno">  666</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno">  667</span>    <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno">  668</span>}</div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno">  669</span> </div>
<div class="line"><a id="l00670" name="l00670"></a><span class="lineno">  670</span> </div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_a7ba0033bdfb41d5d58fc63a160f311f6.html#a7ba0033bdfb41d5d58fc63a160f311f6">  671</a></span><a class="code hl_class" href="classfabgl_1_1_samples_generator.html">SamplesGenerator</a> * <a class="code hl_function" href="classfabgl_1_1_sound_generator_a7ba0033bdfb41d5d58fc63a160f311f6.html#a7ba0033bdfb41d5d58fc63a160f311f6">SoundGenerator::playSamples</a>(int8_t <span class="keyword">const</span> * <a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>, <span class="keywordtype">int</span> length, <span class="keywordtype">int</span> volume, <span class="keywordtype">int</span> durationMS)</div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno">  672</span>{</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno">  673</span>  <span class="keyword">auto</span> sgen = <span class="keyword">new</span> <a class="code hl_class" href="classfabgl_1_1_samples_generator.html">SamplesGenerator</a>(<a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>, length);</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno">  674</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_a04178c4d1679101843945ecfe8c8d3e1.html#a04178c4d1679101843945ecfe8c8d3e1">attach</a>(sgen);</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno">  675</span>  sgen-&gt;setAutoDestroy(<span class="keyword">true</span>);</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno">  676</span>  <span class="keywordflow">if</span> (durationMS &gt; -1)</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno">  677</span>    sgen-&gt;setDuration(durationMS &gt; 0 ? (m_sampleRate / 1000 * durationMS) : length );</div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno">  678</span>  sgen-&gt;setVolume(<a class="code hl_function" href="classfabgl_1_1_sound_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>);</div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno">  679</span>  sgen-&gt;enable(<span class="keyword">true</span>);</div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno">  680</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(<span class="keyword">true</span>);</div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno">  681</span>  <span class="keywordflow">return</span> sgen;</div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno">  682</span>}</div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno">  683</span> </div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno">  684</span> </div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno">  685</span><span class="comment">// does NOT take ownership of the waveform generator</span></div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_a04178c4d1679101843945ecfe8c8d3e1.html#a04178c4d1679101843945ecfe8c8d3e1">  686</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_sound_generator_a04178c4d1679101843945ecfe8c8d3e1.html#a04178c4d1679101843945ecfe8c8d3e1">SoundGenerator::attach</a>(<a class="code hl_class" href="classfabgl_1_1_waveform_generator.html">WaveformGenerator</a> * value)</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno">  687</span>{</div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno">  688</span>  <span class="keywordtype">bool</span> isPlaying = <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(<span class="keyword">false</span>);</div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno">  689</span> </div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno">  690</span>  value-&gt;setSampleRate(m_sampleRate);</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno">  691</span> </div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno">  692</span>  value-&gt;next = m_channels;</div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno">  693</span>  m_channels = value;</div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno">  694</span> </div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno">  695</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(isPlaying);</div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno">  696</span>}</div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno">  697</span> </div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno">  698</span> </div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno"><a class="line" href="classfabgl_1_1_sound_generator_a15a8d9231086fe5e0cec746e00b87144.html#a15a8d9231086fe5e0cec746e00b87144">  699</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="classfabgl_1_1_sound_generator_a15a8d9231086fe5e0cec746e00b87144.html#a15a8d9231086fe5e0cec746e00b87144">SoundGenerator::detach</a>(<a class="code hl_class" href="classfabgl_1_1_waveform_generator.html">WaveformGenerator</a> * value)</div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno">  700</span>{</div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno">  701</span>  <span class="keywordflow">if</span> (!value)</div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno">  702</span>    <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno">  703</span> </div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno">  704</span>  <span class="keywordtype">bool</span> isPlaying = <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(<span class="keyword">false</span>);</div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno">  705</span>  detachNoSuspend(value);</div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno">  706</span>  <a class="code hl_function" href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">play</a>(isPlaying);</div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno">  707</span>}</div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno">  708</span> </div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno">  709</span> </div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno">  710</span><span class="keywordtype">void</span> SoundGenerator::detachNoSuspend(<a class="code hl_class" href="classfabgl_1_1_waveform_generator.html">WaveformGenerator</a> * value)</div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno">  711</span>{</div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno">  712</span>  <span class="keywordflow">for</span> (<a class="code hl_class" href="classfabgl_1_1_waveform_generator.html">WaveformGenerator</a> * c = m_channels, * prev = <span class="keyword">nullptr</span>; c; prev = c, c = c-&gt;next) {</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno">  713</span>    <span class="keywordflow">if</span> (c == value) {</div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno">  714</span>      <span class="keywordflow">if</span> (prev)</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno">  715</span>        prev-&gt;next = c-&gt;next;</div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno">  716</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno">  717</span>        m_channels = c-&gt;next;</div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno">  718</span>      <span class="keywordflow">if</span> (value-&gt;autoDestroy())</div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno">  719</span>        <span class="keyword">delete</span> value;</div>
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno">  720</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno">  721</span>    }</div>
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno">  722</span>  }</div>
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno">  723</span>}</div>
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno">  724</span> </div>
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno">  725</span> </div>
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno">  726</span><span class="keywordtype">int</span> IRAM_ATTR SoundGenerator::getSample()</div>
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno">  727</span>{</div>
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno">  728</span>  <span class="keywordtype">int</span> sample = 0, tvol = 0;</div>
<div class="line"><a id="l00729" name="l00729"></a><span class="lineno">  729</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> g = m_channels; g; ) {</div>
<div class="line"><a id="l00730" name="l00730"></a><span class="lineno">  730</span>    <span class="keywordflow">if</span> (g-&gt;enabled()) {</div>
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno">  731</span>      sample += g-&gt;getSample();</div>
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno">  732</span>      tvol += g-&gt;volume();</div>
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno">  733</span>    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (g-&gt;duration() == 0 &amp;&amp; g-&gt;autoDetach()) {</div>
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno">  734</span>      <span class="keyword">auto</span> curr = g;</div>
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno">  735</span>      g = g-&gt;next;  <span class="comment">// setup next item before detaching this one</span></div>
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno">  736</span>      detachNoSuspend(curr);</div>
<div class="line"><a id="l00737" name="l00737"></a><span class="lineno">  737</span>      <span class="keywordflow">continue</span>; <span class="comment">// bypass &quot;g = g-&gt;next;&quot;</span></div>
<div class="line"><a id="l00738" name="l00738"></a><span class="lineno">  738</span>    }</div>
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno">  739</span>    g = g-&gt;next;</div>
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno">  740</span>  }</div>
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno">  741</span> </div>
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno">  742</span>  <span class="keywordtype">int</span> avol = tvol ? imin(127, 127 * 127 / tvol) : 127;</div>
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno">  743</span>  sample = sample * avol / 127;</div>
<div class="line"><a id="l00744" name="l00744"></a><span class="lineno">  744</span>  sample = sample * <a class="code hl_function" href="classfabgl_1_1_sound_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">volume</a>() / 127;</div>
<div class="line"><a id="l00745" name="l00745"></a><span class="lineno">  745</span>  </div>
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno">  746</span>  <span class="keywordflow">return</span> sample;</div>
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno">  747</span>}</div>
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno">  748</span> </div>
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno">  749</span> </div>
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno">  750</span><span class="comment">// used by DAC generator</span></div>
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno">  751</span><span class="keywordtype">void</span> IRAM_ATTR SoundGenerator::ISRHandler(<span class="keywordtype">void</span> * arg)</div>
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno">  752</span>{</div>
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno">  753</span>  <span class="keywordflow">if</span> (I2S0.int_st.out_eof) {</div>
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno">  754</span> </div>
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno">  755</span>    <span class="keyword">auto</span> soundGenerator = (<a class="code hl_function" href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">SoundGenerator</a> *) arg;</div>
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno">  756</span>    <span class="keyword">auto</span> desc = (<span class="keyword">volatile</span> lldesc_t*) I2S0.out_eof_des_addr;</div>
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno">  757</span>    </div>
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno">  758</span>    <span class="keyword">auto</span> buf = (uint16_t *) soundGenerator-&gt;m_sampleBuffer[desc-&gt;sosf];</div>
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno">  759</span>    </div>
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno">  760</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; FABGL_SOUNDGEN_SAMPLE_BUFFER_SIZE; ++i)</div>
<div class="line"><a id="l00761" name="l00761"></a><span class="lineno">  761</span>      buf[i ^ 1] = (soundGenerator-&gt;getSample() + 127) &lt;&lt; 8;</div>
<div class="line"><a id="l00762" name="l00762"></a><span class="lineno">  762</span>    </div>
<div class="line"><a id="l00763" name="l00763"></a><span class="lineno">  763</span>  }</div>
<div class="line"><a id="l00764" name="l00764"></a><span class="lineno">  764</span>  I2S0.int_clr.val = I2S0.int_st.val;</div>
<div class="line"><a id="l00765" name="l00765"></a><span class="lineno">  765</span>}</div>
<div class="line"><a id="l00766" name="l00766"></a><span class="lineno">  766</span> </div>
<div class="line"><a id="l00767" name="l00767"></a><span class="lineno">  767</span> </div>
<div class="line"><a id="l00768" name="l00768"></a><span class="lineno">  768</span><span class="comment">// used by sigma-delta generator</span></div>
<div class="line"><a id="l00769" name="l00769"></a><span class="lineno">  769</span><span class="keywordtype">void</span> SoundGenerator::timerHandler(<span class="keywordtype">void</span> * args)</div>
<div class="line"><a id="l00770" name="l00770"></a><span class="lineno">  770</span>{</div>
<div class="line"><a id="l00771" name="l00771"></a><span class="lineno">  771</span>  <span class="keyword">auto</span> soundGenerator = (<a class="code hl_function" href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">SoundGenerator</a> *) args;</div>
<div class="line"><a id="l00772" name="l00772"></a><span class="lineno">  772</span> </div>
<div class="line"><a id="l00773" name="l00773"></a><span class="lineno">  773</span>  sigmadelta_set_duty(SIGMADELTA_CHANNEL_0, soundGenerator-&gt;getSample());</div>
<div class="line"><a id="l00774" name="l00774"></a><span class="lineno">  774</span>}</div>
<div class="line"><a id="l00775" name="l00775"></a><span class="lineno">  775</span> </div>
<div class="line"><a id="l00776" name="l00776"></a><span class="lineno">  776</span> </div>
<div class="line"><a id="l00777" name="l00777"></a><span class="lineno">  777</span><span class="preprocessor">#ifdef FABGL_EMULATED</span></div>
<div class="line"><a id="l00778" name="l00778"></a><span class="lineno">  778</span><span class="keywordtype">void</span> SoundGenerator::SDLAudioCallback(<span class="keywordtype">void</span> * <a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>, Uint8 * buffer, <span class="keywordtype">int</span> length)</div>
<div class="line"><a id="l00779" name="l00779"></a><span class="lineno">  779</span>{</div>
<div class="line"><a id="l00780" name="l00780"></a><span class="lineno">  780</span>  <span class="keyword">auto</span> soundGenerator = (<a class="code hl_function" href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">SoundGenerator</a> *) <a class="code hl_variable" href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a>;</div>
<div class="line"><a id="l00781" name="l00781"></a><span class="lineno">  781</span> </div>
<div class="line"><a id="l00782" name="l00782"></a><span class="lineno">  782</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; length; ++i)</div>
<div class="line"><a id="l00783" name="l00783"></a><span class="lineno">  783</span>    buffer[i] = soundGenerator-&gt;getSample() + 127;</div>
<div class="line"><a id="l00784" name="l00784"></a><span class="lineno">  784</span>}</div>
<div class="line"><a id="l00785" name="l00785"></a><span class="lineno">  785</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00786" name="l00786"></a><span class="lineno">  786</span> </div>
<div class="line"><a id="l00787" name="l00787"></a><span class="lineno">  787</span> </div>
<div class="line"><a id="l00788" name="l00788"></a><span class="lineno">  788</span><span class="comment">// SoundGenerator</span></div>
<div class="line"><a id="l00790" name="l00790"></a><span class="lineno">  790</span><span class="comment"></span> </div>
<div class="line"><a id="l00791" name="l00791"></a><span class="lineno">  791</span> </div>
<div class="line"><a id="l00792" name="l00792"></a><span class="lineno">  792</span> </div>
<div class="line"><a id="l00793" name="l00793"></a><span class="lineno">  793</span><span class="comment">/*</span></div>
<div class="line"><a id="l00794" name="l00794"></a><span class="lineno">  794</span><span class="comment"></span> </div>
<div class="line"><a id="l00795" name="l00795"></a><span class="lineno">  795</span><span class="comment">// note (C,D,E,F,G,A,B) + [#,b] + octave (2..7) + space + tempo (99..1)</span></div>
<div class="line"><a id="l00796" name="l00796"></a><span class="lineno">  796</span><span class="comment">// pause (P) + space + tempo (99.1)</span></div>
<div class="line"><a id="l00797" name="l00797"></a><span class="lineno">  797</span><span class="comment">char const * noteToFreq(char const * note, int * freq)</span></div>
<div class="line"><a id="l00798" name="l00798"></a><span class="lineno">  798</span><span class="comment">{</span></div>
<div class="line"><a id="l00799" name="l00799"></a><span class="lineno">  799</span><span class="comment">  uint16_t NIDX2FREQ[][12] = { {   66,   70,   74,   78,   83,   88,   93,   98,  104,  110,  117,  124 }, // 2</span></div>
<div class="line"><a id="l00800" name="l00800"></a><span class="lineno">  800</span><span class="comment">                               {  131,  139,  147,  156,  165,  175,  185,  196,  208,  220,  233,  247 }, // 3</span></div>
<div class="line"><a id="l00801" name="l00801"></a><span class="lineno">  801</span><span class="comment">                               {  262,  277,  294,  311,  330,  349,  370,  392,  415,  440,  466,  494 }, // 4</span></div>
<div class="line"><a id="l00802" name="l00802"></a><span class="lineno">  802</span><span class="comment">                               {  523,  554,  587,  622,  659,  698,  740,  784,  831,  880,  932,  988 }, // 5</span></div>
<div class="line"><a id="l00803" name="l00803"></a><span class="lineno">  803</span><span class="comment">                               { 1046, 1109, 1175, 1245, 1319, 1397, 1480, 1568, 1661, 1760, 1865, 1976 }, // 6</span></div>
<div class="line"><a id="l00804" name="l00804"></a><span class="lineno">  804</span><span class="comment">                               { 2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136, 3322, 3520, 3729, 3951 }, // 7</span></div>
<div class="line"><a id="l00805" name="l00805"></a><span class="lineno">  805</span><span class="comment">                             };</span></div>
<div class="line"><a id="l00806" name="l00806"></a><span class="lineno">  806</span><span class="comment">  uint8_t NNAME2NIDX[] = {9, 11, 0, 2, 4, 5, 7};  // A, B, C, D, E, F, G</span></div>
<div class="line"><a id="l00807" name="l00807"></a><span class="lineno">  807</span><span class="comment">  *freq = 0;</span></div>
<div class="line"><a id="l00808" name="l00808"></a><span class="lineno">  808</span><span class="comment">  while (*note &amp;&amp; *note == &#39; &#39;)</span></div>
<div class="line"><a id="l00809" name="l00809"></a><span class="lineno">  809</span><span class="comment">    ++note;</span></div>
<div class="line"><a id="l00810" name="l00810"></a><span class="lineno">  810</span><span class="comment">  if (*note == 0)</span></div>
<div class="line"><a id="l00811" name="l00811"></a><span class="lineno">  811</span><span class="comment">    return note;</span></div>
<div class="line"><a id="l00812" name="l00812"></a><span class="lineno">  812</span><span class="comment">  int noteIndex = (*note &gt;= &#39;A&#39; &amp;&amp; *note &lt;= &#39;G&#39; ? NNAME2NIDX[*note - &#39;A&#39;] : -2); // -2 = pause</span></div>
<div class="line"><a id="l00813" name="l00813"></a><span class="lineno">  813</span><span class="comment">  ++note;</span></div>
<div class="line"><a id="l00814" name="l00814"></a><span class="lineno">  814</span><span class="comment">  if (*note == &#39;#&#39;) {</span></div>
<div class="line"><a id="l00815" name="l00815"></a><span class="lineno">  815</span><span class="comment">    ++noteIndex;</span></div>
<div class="line"><a id="l00816" name="l00816"></a><span class="lineno">  816</span><span class="comment">    ++note;</span></div>
<div class="line"><a id="l00817" name="l00817"></a><span class="lineno">  817</span><span class="comment">  } else if (*note == &#39;b&#39;) {</span></div>
<div class="line"><a id="l00818" name="l00818"></a><span class="lineno">  818</span><span class="comment">    --noteIndex;</span></div>
<div class="line"><a id="l00819" name="l00819"></a><span class="lineno">  819</span><span class="comment">    ++note;</span></div>
<div class="line"><a id="l00820" name="l00820"></a><span class="lineno">  820</span><span class="comment">  }</span></div>
<div class="line"><a id="l00821" name="l00821"></a><span class="lineno">  821</span><span class="comment">  int octave = *note - &#39;0&#39;;</span></div>
<div class="line"><a id="l00822" name="l00822"></a><span class="lineno">  822</span><span class="comment">  ++note;</span></div>
<div class="line"><a id="l00823" name="l00823"></a><span class="lineno">  823</span><span class="comment">  if (noteIndex == -1) {</span></div>
<div class="line"><a id="l00824" name="l00824"></a><span class="lineno">  824</span><span class="comment">    noteIndex = 11;</span></div>
<div class="line"><a id="l00825" name="l00825"></a><span class="lineno">  825</span><span class="comment">    --octave;</span></div>
<div class="line"><a id="l00826" name="l00826"></a><span class="lineno">  826</span><span class="comment">  } else if (noteIndex == 12) {</span></div>
<div class="line"><a id="l00827" name="l00827"></a><span class="lineno">  827</span><span class="comment">    noteIndex = 0;</span></div>
<div class="line"><a id="l00828" name="l00828"></a><span class="lineno">  828</span><span class="comment">    ++octave;</span></div>
<div class="line"><a id="l00829" name="l00829"></a><span class="lineno">  829</span><span class="comment">  }</span></div>
<div class="line"><a id="l00830" name="l00830"></a><span class="lineno">  830</span><span class="comment">  if (noteIndex &gt;= 0 &amp;&amp; noteIndex &lt;= 11 &amp;&amp; octave &gt;= 2 &amp;&amp; octave &lt;= 7)</span></div>
<div class="line"><a id="l00831" name="l00831"></a><span class="lineno">  831</span><span class="comment">    *freq = NIDX2FREQ[octave - 2][noteIndex];</span></div>
<div class="line"><a id="l00832" name="l00832"></a><span class="lineno">  832</span><span class="comment">  return note;</span></div>
<div class="line"><a id="l00833" name="l00833"></a><span class="lineno">  833</span><span class="comment">}</span></div>
<div class="line"><a id="l00834" name="l00834"></a><span class="lineno">  834</span><span class="comment"></span> </div>
<div class="line"><a id="l00835" name="l00835"></a><span class="lineno">  835</span><span class="comment"></span> </div>
<div class="line"><a id="l00836" name="l00836"></a><span class="lineno">  836</span><span class="comment">char const * noteToDelay(char const * note, int * delayMS)</span></div>
<div class="line"><a id="l00837" name="l00837"></a><span class="lineno">  837</span><span class="comment">{</span></div>
<div class="line"><a id="l00838" name="l00838"></a><span class="lineno">  838</span><span class="comment">  *delayMS = 0;</span></div>
<div class="line"><a id="l00839" name="l00839"></a><span class="lineno">  839</span><span class="comment">  while (*note &amp;&amp; *note == &#39; &#39;)</span></div>
<div class="line"><a id="l00840" name="l00840"></a><span class="lineno">  840</span><span class="comment">    ++note;</span></div>
<div class="line"><a id="l00841" name="l00841"></a><span class="lineno">  841</span><span class="comment">  if (*note == 0)</span></div>
<div class="line"><a id="l00842" name="l00842"></a><span class="lineno">  842</span><span class="comment">    return note;</span></div>
<div class="line"><a id="l00843" name="l00843"></a><span class="lineno">  843</span><span class="comment">  int val = atoi(note);</span></div>
<div class="line"><a id="l00844" name="l00844"></a><span class="lineno">  844</span><span class="comment">  if (val &gt; 0)</span></div>
<div class="line"><a id="l00845" name="l00845"></a><span class="lineno">  845</span><span class="comment">    *delayMS = 1000 / val;</span></div>
<div class="line"><a id="l00846" name="l00846"></a><span class="lineno">  846</span><span class="comment">  return note + (val &gt; 9 ? 2 : 1);</span></div>
<div class="line"><a id="l00847" name="l00847"></a><span class="lineno">  847</span><span class="comment">}</span></div>
<div class="line"><a id="l00848" name="l00848"></a><span class="lineno">  848</span><span class="comment"></span> </div>
<div class="line"><a id="l00849" name="l00849"></a><span class="lineno">  849</span><span class="comment"></span> </div>
<div class="line"><a id="l00850" name="l00850"></a><span class="lineno">  850</span><span class="comment"></span> </div>
<div class="line"><a id="l00851" name="l00851"></a><span class="lineno">  851</span><span class="comment">void play_task(void*arg)</span></div>
<div class="line"><a id="l00852" name="l00852"></a><span class="lineno">  852</span><span class="comment">{</span></div>
<div class="line"><a id="l00853" name="l00853"></a><span class="lineno">  853</span><span class="comment">  const char * music = &quot;A4 4 A4 4 A#4 4 C5 4 C5 4 A#4 4 A4 4 G4 4 F4 4 F4 4 G4 4 A4 4 A4 2 G4 16 G4 2 P 8 &quot;</span></div>
<div class="line"><a id="l00854" name="l00854"></a><span class="lineno">  854</span><span class="comment">                       &quot;A4 4 A4 4 A#4 4 C5 4 C5 4 A#4 4 A4 4 G4 4 F4 4 F4 4 G4 4 A4 4 G4 2 F4 16 F4 2 P 8&quot;;</span></div>
<div class="line"><a id="l00855" name="l00855"></a><span class="lineno">  855</span><span class="comment">  while (true) {</span></div>
<div class="line"><a id="l00856" name="l00856"></a><span class="lineno">  856</span><span class="comment">    if (Play) {</span></div>
<div class="line"><a id="l00857" name="l00857"></a><span class="lineno">  857</span><span class="comment">      const char * m = music;</span></div>
<div class="line"><a id="l00858" name="l00858"></a><span class="lineno">  858</span><span class="comment">      while (*m &amp;&amp; Play) {</span></div>
<div class="line"><a id="l00859" name="l00859"></a><span class="lineno">  859</span><span class="comment">        int freq, delms;</span></div>
<div class="line"><a id="l00860" name="l00860"></a><span class="lineno">  860</span><span class="comment">        m = noteToFreq(m, &amp;freq);</span></div>
<div class="line"><a id="l00861" name="l00861"></a><span class="lineno">  861</span><span class="comment">        m = noteToDelay(m, &amp;delms);</span></div>
<div class="line"><a id="l00862" name="l00862"></a><span class="lineno">  862</span><span class="comment">        frequency = freq;</span></div>
<div class="line"><a id="l00863" name="l00863"></a><span class="lineno">  863</span><span class="comment">        delay(delms);</span></div>
<div class="line"><a id="l00864" name="l00864"></a><span class="lineno">  864</span><span class="comment">        frequency = 0;</span></div>
<div class="line"><a id="l00865" name="l00865"></a><span class="lineno">  865</span><span class="comment">        delay(25);</span></div>
<div class="line"><a id="l00866" name="l00866"></a><span class="lineno">  866</span><span class="comment">      }</span></div>
<div class="line"><a id="l00867" name="l00867"></a><span class="lineno">  867</span><span class="comment">      Play = false;</span></div>
<div class="line"><a id="l00868" name="l00868"></a><span class="lineno">  868</span><span class="comment">    } else</span></div>
<div class="line"><a id="l00869" name="l00869"></a><span class="lineno">  869</span><span class="comment">      delay(100);</span></div>
<div class="line"><a id="l00870" name="l00870"></a><span class="lineno">  870</span><span class="comment">  }</span></div>
<div class="line"><a id="l00871" name="l00871"></a><span class="lineno">  871</span><span class="comment">}</span></div>
<div class="line"><a id="l00872" name="l00872"></a><span class="lineno">  872</span><span class="comment"></span> </div>
<div class="line"><a id="l00873" name="l00873"></a><span class="lineno">  873</span><span class="comment"></span> </div>
<div class="line"><a id="l00874" name="l00874"></a><span class="lineno">  874</span><span class="comment">*/</span></div>
<div class="line"><a id="l00875" name="l00875"></a><span class="lineno">  875</span> </div>
<div class="line"><a id="l00876" name="l00876"></a><span class="lineno">  876</span> </div>
<div class="line"><a id="l00877" name="l00877"></a><span class="lineno">  877</span> </div>
<div class="line"><a id="l00878" name="l00878"></a><span class="lineno">  878</span> </div>
<div class="line"><a id="l00879" name="l00879"></a><span class="lineno">  879</span> </div>
<div class="line"><a id="l00880" name="l00880"></a><span class="lineno">  880</span> </div>
<div class="line"><a id="l00881" name="l00881"></a><span class="lineno">  881</span> </div>
<div class="line"><a id="l00882" name="l00882"></a><span class="lineno">  882</span> </div>
<div class="line"><a id="l00883" name="l00883"></a><span class="lineno">  883</span>} <span class="comment">// end of namespace</span></div>
<div class="line"><a id="l00884" name="l00884"></a><span class="lineno">  884</span> </div>
<div class="ttc" id="aclassfabgl_1_1_noise_waveform_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_noise_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::NoiseWaveformGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00308">soundgen.cpp:308</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_noise_waveform_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_noise_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::NoiseWaveformGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00303">soundgen.cpp:303</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_samples_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_samples_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::SamplesGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00425">soundgen.cpp:425</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_samples_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_samples_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::SamplesGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00420">soundgen.cpp:420</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_samples_generator_html"><div class="ttname"><a href="classfabgl_1_1_samples_generator.html">fabgl::SamplesGenerator</a></div><div class="ttdoc">Samples generator.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00311">soundgen.h:311</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sawtooth_waveform_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_sawtooth_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::SawtoothWaveformGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00262">soundgen.cpp:262</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sawtooth_waveform_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_sawtooth_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::SawtoothWaveformGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00254">soundgen.cpp:254</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_a04178c4d1679101843945ecfe8c8d3e1_html_a04178c4d1679101843945ecfe8c8d3e1"><div class="ttname"><a href="classfabgl_1_1_sound_generator_a04178c4d1679101843945ecfe8c8d3e1.html#a04178c4d1679101843945ecfe8c8d3e1">fabgl::SoundGenerator::attach</a></div><div class="ttdeci">void attach(WaveformGenerator *value)</div><div class="ttdoc">Attaches a waveform generator.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00686">soundgen.cpp:686</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_a15a8d9231086fe5e0cec746e00b87144_html_a15a8d9231086fe5e0cec746e00b87144"><div class="ttname"><a href="classfabgl_1_1_sound_generator_a15a8d9231086fe5e0cec746e00b87144.html#a15a8d9231086fe5e0cec746e00b87144">fabgl::SoundGenerator::detach</a></div><div class="ttdeci">void detach(WaveformGenerator *value)</div><div class="ttdoc">Detaches a waveform generator.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00699">soundgen.cpp:699</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25_html_a1f313ace9bd328af72dac21f508f7b25"><div class="ttname"><a href="classfabgl_1_1_sound_generator_a1f313ace9bd328af72dac21f508f7b25.html#a1f313ace9bd328af72dac21f508f7b25">fabgl::SoundGenerator::SoundGenerator</a></div><div class="ttdeci">SoundGenerator(int sampleRate=16384, gpio_num_t gpio=GPIO_AUTO, SoundGenMethod genMethod=SoundGenMethod::Auto)</div><div class="ttdoc">Creates an instance of the sound generator. Only one instance is allowed.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00454">soundgen.cpp:454</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_a56fd55a21e8060769938c33ac16ee4f2_html_a56fd55a21e8060769938c33ac16ee4f2"><div class="ttname"><a href="classfabgl_1_1_sound_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">fabgl::SoundGenerator::volume</a></div><div class="ttdeci">int volume()</div><div class="ttdoc">Determines current overall volume.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00485">soundgen.h:485</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_a7ba0033bdfb41d5d58fc63a160f311f6_html_a7ba0033bdfb41d5d58fc63a160f311f6"><div class="ttname"><a href="classfabgl_1_1_sound_generator_a7ba0033bdfb41d5d58fc63a160f311f6.html#a7ba0033bdfb41d5d58fc63a160f311f6">fabgl::SoundGenerator::playSamples</a></div><div class="ttdeci">SamplesGenerator * playSamples(int8_t const *data, int length, int volume=100, int durationMS=0)</div><div class="ttdoc">Plays the specified samples.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00671">soundgen.cpp:671</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62_html_aa7c56b84cb4738b6826e34ca20993d62"><div class="ttname"><a href="classfabgl_1_1_sound_generator_aa7c56b84cb4738b6826e34ca20993d62.html#aa7c56b84cb4738b6826e34ca20993d62">fabgl::SoundGenerator::play</a></div><div class="ttdeci">bool play(bool value)</div><div class="ttdoc">Starts or stops playing.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00646">soundgen.cpp:646</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_sound_generator_ac8bb3912a3ce86b15842e79d0b421204_html_ac8bb3912a3ce86b15842e79d0b421204"><div class="ttname"><a href="classfabgl_1_1_sound_generator_ac8bb3912a3ce86b15842e79d0b421204.html#ac8bb3912a3ce86b15842e79d0b421204">fabgl::SoundGenerator::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Stops playing and removes all attached waveform generators.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00497">soundgen.cpp:497</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_square_waveform_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_square_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::SquareWaveformGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00159">soundgen.cpp:159</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_square_waveform_generator_a5719e6bf55f3f485e6b82e7800acf004_html_a5719e6bf55f3f485e6b82e7800acf004"><div class="ttname"><a href="classfabgl_1_1_square_waveform_generator_a5719e6bf55f3f485e6b82e7800acf004.html#a5719e6bf55f3f485e6b82e7800acf004">fabgl::SquareWaveformGenerator::setDutyCycle</a></div><div class="ttdeci">void setDutyCycle(int dutyCycle)</div><div class="ttdoc">Sets square wave duty cycle.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00153">soundgen.cpp:153</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_square_waveform_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_square_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::SquareWaveformGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00144">soundgen.cpp:144</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_triangle_waveform_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_triangle_waveform_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::TriangleWaveformGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00210">soundgen.cpp:210</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_triangle_waveform_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_triangle_waveform_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::TriangleWaveformGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00202">soundgen.cpp:202</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_v_i_c_noise_generator_a52c1060c5ab1219386569f2cc39991b9_html_a52c1060c5ab1219386569f2cc39991b9"><div class="ttname"><a href="classfabgl_1_1_v_i_c_noise_generator_a52c1060c5ab1219386569f2cc39991b9.html#a52c1060c5ab1219386569f2cc39991b9">fabgl::VICNoiseGenerator::getSample</a></div><div class="ttdeci">int getSample()</div><div class="ttdoc">Gets next sample.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00358">soundgen.cpp:358</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_v_i_c_noise_generator_a5b5c30c147988a4bef2b08394984079d_html_a5b5c30c147988a4bef2b08394984079d"><div class="ttname"><a href="classfabgl_1_1_v_i_c_noise_generator_a5b5c30c147988a4bef2b08394984079d.html#a5b5c30c147988a4bef2b08394984079d">fabgl::VICNoiseGenerator::setFrequency</a></div><div class="ttdeci">void setFrequency(int value)</div><div class="ttdoc">Sets output frequency.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8cpp_source.html#l00347">soundgen.cpp:347</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2_html_a56fd55a21e8060769938c33ac16ee4f2"><div class="ttname"><a href="classfabgl_1_1_waveform_generator_a56fd55a21e8060769938c33ac16ee4f2.html#a56fd55a21e8060769938c33ac16ee4f2">fabgl::WaveformGenerator::volume</a></div><div class="ttdeci">int volume()</div><div class="ttdoc">Determines current volume.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00135">soundgen.h:135</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f_html_a996f2f6c960641738fc46d3f39f6ef6f"><div class="ttname"><a href="classfabgl_1_1_waveform_generator_a996f2f6c960641738fc46d3f39f6ef6f.html#a996f2f6c960641738fc46d3f39f6ef6f">fabgl::WaveformGenerator::duration</a></div><div class="ttdeci">uint32_t duration()</div><div class="ttdoc">Returns number of remaining samples to play.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00096">soundgen.h:96</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63_html_abc395029362d9990b5dad44dfafe9d63"><div class="ttname"><a href="classfabgl_1_1_waveform_generator_abc395029362d9990b5dad44dfafe9d63.html#abc395029362d9990b5dad44dfafe9d63">fabgl::WaveformGenerator::sampleRate</a></div><div class="ttdeci">uint16_t sampleRate()</div><div class="ttdoc">Determines the sample rate.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00167">soundgen.h:167</a></div></div>
<div class="ttc" id="aclassfabgl_1_1_waveform_generator_html"><div class="ttname"><a href="classfabgl_1_1_waveform_generator.html">fabgl::WaveformGenerator</a></div><div class="ttdoc">Base abstract class for waveform generators. A waveform generator can be seen as an audio channel tha...</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00071">soundgen.h:71</a></div></div>
<div class="ttc" id="adisplaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21_html_a96db82e580e46e24e2b39dd6c5bf7c21"><div class="ttname"><a href="displaycontroller_8h_a96db82e580e46e24e2b39dd6c5bf7c21.html#a96db82e580e46e24e2b39dd6c5bf7c21">data</a></div><div class="ttdeci">uint8_t const  * data</div><div class="ttdef"><b>Definition:</b> <a href="displaycontroller_8h_source.html#l00004">displaycontroller.h:4</a></div></div>
<div class="ttc" id="agroup___enumerations_ga0c57da098cf653e49e8c46e3a86eee31_html_ga0c57da098cf653e49e8c46e3a86eee31"><div class="ttname"><a href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#ga0c57da098cf653e49e8c46e3a86eee31">fabgl::SoundGenMethod</a></div><div class="ttdeci">SoundGenMethod</div><div class="ttdoc">Specifies sound generation method.</div><div class="ttdef"><b>Definition:</b> <a href="soundgen_8h_source.html#l00329">soundgen.h:329</a></div></div>
<div class="ttc" id="agroup___enumerations_ga0c57da098cf653e49e8c46e3a86eee31_html_gga0c57da098cf653e49e8c46e3a86eee31a06b9281e396db002010bde1de57262eb"><div class="ttname"><a href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a06b9281e396db002010bde1de57262eb">fabgl::SoundGenMethod::Auto</a></div><div class="ttdeci">@ Auto</div></div>
<div class="ttc" id="agroup___enumerations_ga0c57da098cf653e49e8c46e3a86eee31_html_gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6"><div class="ttname"><a href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a52a8b954485e8bf8ebe32865d17563a6">fabgl::SoundGenMethod::DAC</a></div><div class="ttdeci">@ DAC</div></div>
<div class="ttc" id="agroup___enumerations_ga0c57da098cf653e49e8c46e3a86eee31_html_gga0c57da098cf653e49e8c46e3a86eee31a582cc73bac6fd333fd602b6a3db1dfd4"><div class="ttname"><a href="group___enumerations_ga0c57da098cf653e49e8c46e3a86eee31.html#gga0c57da098cf653e49e8c46e3a86eee31a582cc73bac6fd333fd602b6a3db1dfd4">fabgl::SoundGenMethod::SigmaDelta</a></div><div class="ttdeci">@ SigmaDelta</div></div>
<div class="ttc" id="agroup___enumerations_ga1e46218ee302fcc8c77e4ea0968ea149_html_gga1e46218ee302fcc8c77e4ea0968ea149a9de917eb8d6dcec8b9e987a7dfc09379"><div class="ttname"><a href="group___enumerations_ga1e46218ee302fcc8c77e4ea0968ea149.html#gga1e46218ee302fcc8c77e4ea0968ea149a9de917eb8d6dcec8b9e987a7dfc09379">fabgl::VideoMode::CVBS</a></div><div class="ttdeci">@ CVBS</div></div>
<div class="ttc" id="asoundgen_8h_html"><div class="ttname"><a href="soundgen_8h.html">soundgen.h</a></div><div class="ttdoc">This file contains all classes related to FabGL Sound System.</div></div>
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